Asked by Chevonne Watson on Apr 25, 2024
Verified
Technician A says rotors that are smaller than machine-to or below the discard limit must be replaced.Technician B says rotors above machine-to may be able to be placed back in service depending on their parallelism, runout, and surface condition.Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B
Machine-to Limit
Adjusting or configuring machinery or components to operate within specific, prescribed limits or tolerances for optimal performance or safety.
Discard Limit
The specified point of wear or damage at which a component or part is no longer considered safe or functional and must be replaced.
Parallelism
The extent to which the friction surface of a brake disc varies in thickness. Slight variations in rotor thickness result in brake pedal pulsation as the pads must move in and out to compensate. Also called taper or thickness variation.
- Understand the criteria for rotor replacement or reconditioning, including machine-to, discard limits, and rotor examination parameters.
Verified Answer
BF
belle fanm creole fanm creoleApr 28, 2024
Final Answer :
C
Explanation :
Technician A is correct because rotors that are smaller than the machine-to or below the discard limit are too thin to safely use and must be replaced for safety reasons. Technician B is correct because rotors that are above the machine-to limit may still be serviceable if they meet certain conditions regarding parallelism, runout, and surface condition, indicating they can be safely reused.
Learning Objectives
- Understand the criteria for rotor replacement or reconditioning, including machine-to, discard limits, and rotor examination parameters.